DeathRowe015

Well I got it solved for now. Apparently there is a bulletin out for this issue. I got talking to the service desk when taking the truck in for the increased brake pedal effort recall. They did some digging and basically re coded the transfer case module and it is working for now. Thanks for all the suggestions! Hopefully it stays fixed. Sent from my iPhone using Tapatalk

2015 GMC Sierra with 64000 miles on the truck and have used the 4Hi a handful of times. Went to use it the other day and the lights on the switch would blink and then turn off (not constant on like it should) and not engage. Same for the auto mode. Got to playing around with it today and the only way I can get the Auto or 4Hi to engage is to first engage the 4Lo. Once in 4Lo I can cycle to 4Hi and auto and 2wd no problem. But after running in 2wd for a few miles. Same thing, cannot switch to auto or 4Hi until I switch to 4Lo first. Anyone experience this or have similar issues? Or suggestions on source of the problem? Thanks! Update: Issue was fixed by re-coding the transfer case module. There is apparently a bulletin out for this issue. Sent from my iPhone using Tapatalk

That I do not know. I have not tried. The motorcycle won the battle for garage parking. Sent from my iPhone using Tapatalk

Zone 4.5 lift increases total front track width roughly 3". I did 1 - 3/4" spacers to get me close and not have to trim studs. 1.5" spacers would need studs trimmed for proper fit. Technically they are more of an "adapter" rather than a spacer. Aggressiveness of tire doesn't really dictate size of spacer needed. Less aggressive and/or narrower of a tire would still have a roughly 3" increase in track with in front relative to the rear. Sent from my iPhone using Tapatalk

Here ya go. I do have the 1-3/4" spacers in the rear to match the increased track width in the front. Sent from my iPhone using Tapatalk

Don't have any right now. I'll try and get some this weekend when I rotate the tires. Sent from my iPhone using Tapatalk

Thanks! I'm pretty happy with it. I've seen a lot of people running 35 or 33x12.50. The 295/60r20 seemed like a happy median between them. They don't look stuffed in there or undersized. The 295s are a bit narrower too so it's not super aggressive, but just enough, in my opinion. Sent from my iPhone using Tapatalk

I've got the NFab bars. And it's the zone 4.5 with 295/60r20 Ridge Grapplers.

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